Avtor/Urednik		Tomaževič, Dejan; Likar, Boštjan; Pernuš, Franjo
Naslov		A comparison of retrospective shading correction techniques
Tip		članek
Vir		International conference on pattern recognition
Leto izdaje		2000
Obseg		str. 568-71
Jezik		eng
Abstrakt		In this paper we describe the problem ojretrospective shading correction, which is a necessary pre processing step in many tasks of image analysis. Eight algorithms are implemented and compared. The performance of the algorithms was analysed on three sets of differently structured synthetic shaded and shading free images. The results show that the entropy minimisation (EMI) method outperforms the other methods in terms of the reduct*on of true intensity var*ations and preservation of intensity characteristics of the shading free images. The strength of EMI is especially apparent when applied to images containing large-scale objects.
Deskriptorji		IMAGE PROCESSING, COMPUTER-ASSISTED